/*
    Carracci Systems - Carracci Server (openbam project)
    Copyright (C) 2007  Carracci Systems

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package org.openbam.core.expr;

import org.openbam.core.Event;

public abstract class Expression implements IExpression {
    protected String name;

    /**
     * @return the name
     */
    public String getName() {
        return name;
    }

    /**
     * Evaluate the event, and return its value after evaluation.
     *
     * @param event the event
     */
    public abstract Object evaluate(Event event);

    /**
     * @param name the name to set
     */
    public void setName(String name) {
        this.name = name;
    }

    public Double getDoubleValue() {
        return TypeConvertor.doubleValue(getValue());
    }

    public String getStringValue() {
        Object o = getValue();

        return (o != null) ? o.toString() : null;
    }

    public Boolean getBooleanValue() {
        return TypeConvertor.booleanValue(getValue());
    }

    public String getDescription() {
        return toString();
    }
}
